31561520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1009}}^1$

素因数の和:1062

約数の個数: 80

約数和(自身を含む): 81155520

約数和(自身を除く): 49594000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 680, 782, 920, 1009, 1360, 1564, 1840, 1955, 2018, 3128, 3910, 4036, 5045, 6256, 7820, 8072, 10090, 15640, 16144, 17153, 20180, 23207, 31280, 34306, 40360, 46414, 68612, 80720, 85765, 92828, 116035, 137224, 171530, 185656, 232070, 274448, 343060, 371312, 394519, 464140, 686120, 789038, 928280, 1372240, 1578076, 1856560, 1972595, 3156152, 3945190, 6312304, 7890380, 15780760, 31561520]

約数ペア:

[(1, 31561520), (2, 15780760), (4, 7890380), (5, 6312304), (8, 3945190), (10, 3156152), (16, 1972595), (17, 1856560), (20, 1578076), (23, 1372240), (34, 928280), (40, 789038), (46, 686120), (68, 464140), (80, 394519), (85, 371312), (92, 343060), (115, 274448), (136, 232070), (170, 185656), (184, 171530), (230, 137224), (272, 116035), (340, 92828), (368, 85765), (391, 80720), (460, 68612), (680, 46414), (782, 40360), (920, 34306), (1009, 31280), (1360, 23207), (1564, 20180), (1840, 17153), (1955, 16144), (2018, 15640), (3128, 10090), (3910, 8072), (4036, 7820), (5045, 6256)]